标题: HID灯点火器（ignitor,也称触发器）的元件非正常试验如何做？ [打印本页] 作者: caballo3157 时间: 2007-8-14 15:41 标题: HID灯点火器（ignitor,也称触发器）的元件非正常试验如何做？ UL1029a :/ A% N9 ]& |( S6 z( e3 T! x
5.3.2 Component abnormal conditions 9 }2 V# e. d+ F! d: m5.3.2.1 For electronic devices, various semiconductors (solid state) components and electrolytic capacitors shall be shorted one at a time to determine there would be no fire hazard.5.3.2.2 If it can be determined by circuit inspection that some diodes would not cause a hazardous condition or a short would be the same as the “lamp open” condition previously conducted, the component need not be shorted. Components located in circuits that were capable of delivering more than 50 W of power are to be short-circuited or open circuited in turn. The locus (locations) of the 50 W points can be determined with the method described in the Standard for Fluorescent-Lamp Ballasts, UL 935. 4 T0 Z7 v5 ]7 a4 ?6 t0 o4 X9 A5.3.2.3 The device under test was checked for fire hazards by observation, checked for ignition or 4 ?( O2 M4 T; o2 d$ M0 h& wdripping of potting compound, and emission of flames or molten metal from the device enclosure. C5 e& K. ^- i% I7 o1 N. A
3 H0 ^/ i* _% W. H# E1 J我的问题是：元件的短路是在灯点亮之前还是之后？作者: 火神 时间: 2007-8-14 17:37
英文的，俺看不懂。。 作者: caballo3157 时间: 2007-8-15 07:21
简单地说，点火器非正常试验要做有关元件的短路试验。0 @9 B( G% o6 Y. @! W7 T9 g8 E" t
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问题就是短路是在正常工作之前？还是在正常工作之后？（两者状态有很大区别）作者: brent 时间: 2007-8-15 08:47
在点亮之前短路。作者: caballo3157 时间: 2007-8-15 10:26
谢谢！您有何依据？& U3 ^7 ^6 ]8 P3 a) U- q3 D" m
点亮前短路，条件更恶劣，照理应该如此。但从我以前做过的认证报告上看，是在点亮后短路。& c" l6 U3 B3 b- r- u
从标准上看，这里好象没有明确说明。作者: brent 时间: 2007-8-15 10:42
试想，灯点亮了再短路，可能冒火或是其它危险，此时灯已打开或是点火器在灯具外，怎么可能会引起灯具起火。+ X6 g h+ M8 {) A i
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再者，参考其它标准作法，同样未说明，但都是在工作之前。作者: heymutwo 时间: 2007-9-4 13:53
正常状态稳定了之后才能作fault condition作者: RodgerLan 时间: 2007-9-4 14:04
所有功能性测试都必须在亮灯之前做
